Our studies aim at controlling the organization of conjugated (macro)molecules (oligomers and polymers) at the nanoscopic/microscopic level through supramolecular design and engineering and thin film deposition protocols. The main driving forces for achieving nanoscale ordering are: i) self-assembly processes involving p-p interactions and/or hydrogen-bonding (for instance, using bio-inspired and DNA templating): ii) nanophase separation in “rod-coil” block copolymers; iii) thin films patterning approaches for (nano)structuring conjugated materials (including nanorubbing and soft-lithography techniques). Our studies are aimed at understanding the relationships between the molecular architecture, the nanoscale morphology and the optoelectronic properties for light-emitting devices, field-effect transistors, and organic photovoltaic diodes. We also work towards the development of novel SPM approaches for the nanometer scale characterization of the electrical and mechanical properties of organic materials.